1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6db4fb8c0ce3b8e1605c5150da835179e4fd352ce762c36aded8d1b2538f4a5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abf371fc-07d4-42a5-8070-7846cbcdf005.json and https://artists.proofprofile.net/proofs/artist/abf371fc-07d4-42a5-8070-7846cbcdf005.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6904b4ec259fb9275100260c63f827c826cfff8216a144f79b731f4d236e3f38. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q1982280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dfd9a7b807d730173b91a29e96349b5748426684a72b51dd6082e6c78c09f7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q1982282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320c4fe9fda0b827047fd16c9c09648bab9eca306904f17226837075b9b6068d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q1982283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abb85521f3a5a896b08d88f819ab5e1829eaaff38264ca02880d3ef1962856d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:07:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q1982284.
Concert "Les bontés de l'Éternel"(Live à Kinshasa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e53473eeae10aa334315bfc2aae55c05be06c751f453ddefcbe6f5b3008b02. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIO2439881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d8ec9e41ee8272fa615d3f20083494da91a306c9a7b72bf1e20fc73deb0246. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIN2440257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e2368de136c51e88136d4ea3aafb9b460656d0030fbe7424866e95acf7e4fb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIN2440674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95f212d1a7442672a7ef1288fb1faca2ee687ecac9ead402efe337e4fa4b8d2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIN2444610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59efe70eff457464b3435c9a61f36f7b007a1ba480437578eba715b603a597d. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:01:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIO2444633.
Les bontés de l’Éternel (Live à Kinshasa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e31712bef5f74bade77b0f19b0b5d680e4d0f078380245a4c9b7a5046a5dccb. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:05:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIN2444693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad4867dddf1565446b870425261e4b247595bcd5fe67da684cad75d75f3812a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJX2565740.